Milk-pasteurizing apparatus



Feb. 10, 1931. c. E. NORTH 1,791,511

MILK PASIEURIZING APPARATUS Filed April 5, 1929 4 Sheets-Sheet 1 INVENTOR 6110/11/65 15. Mill,

Feb. 10, 1931, c. E. NORTH MILK PASTEURIZING APPARATUS Filed April 3, 1929 4 Sheets-Sheet 2 INVENTOR ChLLTZ/BS 1? Jl/rm,

ATTORNEY.

Feb. 10, 1931. c. E. NORTH 1,791,511

MILK PASTEURI ZING APPARATUS Filed April 3. 1929 4 sheets-sheet 3 l l I l M I I A lNVENTO-R Charbefi Jf. M71211,

Feb. 10, 1931. c. E. NORTH 13 L5 MILK PASTEURIZING APPARATUS Filed April :5. 1929 4 Sheets-559st 4 INVENTOR mill; is to be held, the c ntainers being CllS- Patented Feb. 1a, 1931 mam mam.

PACKAGE ROI-1TH, O11 llIOl TTCLAl'R, NE GQIEIALIY, OF CHICAGO,

vEILK-PASTEURIZING APPARATUS Application filed April 3,

My invention relates to improvements in apparatus for the past u-rization of milk and has particular reference to improvements in so-called holders for the storage or keeping of milk for period of time and a temperature required to effect the pasteurization treatment. My invention comprises improvements in the class of pasteurizing apparatus set forth in my applications Serial No. 151,362, filed November 2th, 1926, now Patent No. l 87 .,Jan. 7, 1930, and Serial l lo. 287,715, filed June. 23rd, 1928.

One of the objects of my i vention is to provide improved means to cause supply and discharge pipes for the milk periodically to enter and recede from separate holding containers in timed sequence.

Another object is to provide sir roved means for efiecting rotative and as recprocatory operation of the milk supply and discharge pipes, with respect tothe several containers.

A further obyect is to provide an especially compact arrangement, of the containers whereby large holding capacity is obtained with a imnimuni of space occupied by the 'atus.

carrying out my invention l provide a plura ity of containers or tanks in which the posed in two groups with those of each group in longitudinally parallel relation, and with the adjacent ends of both groups of containers a ranged so that a circular path described over them may be divided into as many equal segments as there are containers, with each division registering with one container For filling and emptying the containers, 1 provide rotatively and reciprocatively supported supply and discharge pipes adapted to enter and recede from the containers at timed intervals, the pipes being rotatively supported in such a way as to he stepped or moved: annularly with respect to successive containers, and reciprocatively supported in such manner as to be lowered successively into the several containers after each annular movement, for the filling and emptying operations and thereafter lifted out of thecontainers, means to conduct milk to the 1929. Serial No. 352,631.

Fig. 2 is an end view in elevation, with of the tank structure remover is a sectional elevation taken on a.

transverse plane through the axis v and discharge tubes supporting mechanism.

sectional viewin elevation of the planes of portion and opera Fig. a is 0 eratin mechanism as seen on the the irregular line in Fig. 3;

Fig. 5 is a sectional view in elevation of a portion of the driving mechanism as seen on the planes of the irregular line 5 5 in Fig. 2. Fig. 6 is a fractional. sectional plan viewof a portion otthe central tube supportingstructure as seen on the plane of the line 6-6 in 7 is a fractional se tional plan view of a portion of the tube actuating mechanism as seen onthe planeof the line 'Z7 in Fig.4.

Fig. 8 is perspective View in detail of parts of the-tubeelevating mechanism.

Similar numerals ofreierence indicate corresponding parts in the several views.

The milk holder illustrated includes two groups of milk containers, tanks or comparttheir extended ends spaced from each other, and forming between them a large rectangular central space 2 with communicating lateral spaces 3.

The tanks 1 of each. group preferably are spaced from each other and the entire group surrounded by an outer shell or acket 4 spaced from the tank walls. the intervening spacing being adapted for the circulation of a heating medium, in manner well known to the art. This arrangement in two groups of parallel elongated tanks accomplishes very eflicient utilization of floor space required for the complete apparatus, the central spaces 2 and 3 accommodating the operating mechanism.

The tanks and their outer ackets are sup ported upon suitable standards 5. A cover 6 is provided for each group of tanks, the covers having an opening 7 over each tank or compartment for the introduction of the filling and emptying tubes, the openings being equidistant and arranged in a circle including both groups.

An inlet pipe for the milk is indicated at 8, (Fig. 2) through which the heated. milk may be supplied by gravity from an overhead tank, or in any other desired way. The pipe 8 communicates with a stationary outer pipe 9 of a pair of vertically positioned telescoping pipes, of which an inner pipe 10 is supported for rotative and reciprocatorv movement within the outer pipe 9. The lower end of the outer pipe 9 is provided with a '7 conventional packing gland 11 for sealing the having its axis junction of the two pipes against leakage of milk.

The lower end portion of the sliding p pe 10 is secured in a tubular bracket 12, the inner bore of which is divided by a partition or wall 13 (Fig. 3) into two axial chambers 14: and without inter-communication. Each of the chambers has a lateral opening. indicated at 16 and 17 communicating respectively with a pair of radially extending tubular arms or pipes 18 and 19 secured to the bracket 12 in suitable nipples or flanges formed on the bracket. The pipes 18 and 19 are in angular relation. their outer end portions being spaced by the distance between the openings 7 in the tank covers. and respectively supporting in communication therewith a depending supply pipe 20 and a depending discharge pipe 21.

The supply and discharge pipes 20 and 21 are vertically slidable through suitable hearing rings 22 mounted in the bottom wall 23 of a rotatable dome structu cur operative milk conduits e derrilcd cl coincident with that of the pipe and bracket 12. By rotationof the dome and conduit structure. the supply and discharge tubes and 21 may be registere with anv pair of the openings 7 and the tubes lowered therethrough to fill one and empty another of the tanks 1, as hereinafter de scribed.

o v1 n1 iql +101 I 1 t" .Oe'ouleml or) :Ltru 1. U0 v lb OlL/l (,llll lJOLulOll lin communication with the tube 25 ha *ing at its lower end a conti-enal packing gland to maintain a T 1 'd seal with the tube 30. The tube is in cation with a milk outlet pipe le T to a pump (not shown) for withd the nu k by suction from the tanks nough the discharge tube .41. Milk flow from the supply and discharge tubes 20 and 21, when the tubes are lifted for transfer rom. one pair of tanks to another, is prel =.ted by means of valves located in the of the tubes, preferably poppet valves of the st indicated at 34. extend rardly for valve opening contact with bottom walls of the tanl when the tubes -n lowered position. Also, I may use the pump control described in my co-pending amilication Serial l'lo. 287,715 for stopping th suction pump on the discharge conduit a terval of transfer of the supply discharge tubes. he rotative movement of the structure comprising the milk supply and discharge con dui 1 is accomplished by means of a bevel secured to the bottom wall of the rotatable dome and mounted in co-axial relation to the tube the latter having longislidable bearing in the hub 36 of the out keyec thereto for rotation with the p g and dome. The gear hub 36 supports tne weight of the dome and conduit structure its lower face having operative bearing upon the recessed upper face of the stationary standard arm 27. A circumferential groove 37 (see g. 6) is formed about the lower end of the hue 36 into which extend a series of pins 38 mounted in a marginal flange formed on the bear arm 27 by which means the gear and dome structure are retained against axial movement during the reciprocatory movement of the conduit structure.

The gear is driven by a bevel pinion 39 'igidly mounted on a shaft 40 having spaced. Inns in a pair of bearing arms 41 and 42 n upward from stationary standfix d upon a base support 44. The ,arries a rigidly mounted spur gear 'ven by a pinion 46 mounted on a shaft lea..;ig hearings in the arms 41 and 42. The shaft 47 endwardly carries a gear 48 in so I . driven engagement with a gear 72 secured on driven engagement with a gear 49 mounted on a shaft 50 having bearings in the arm 42 and bracket extension 51 thereof. Mounted on the shaft 50 in rigid relation to the gear 49 is a star Wheel member 52 of a conventional Geneva stop mechanism, the star Wheel havl'lg' operative engagement with a driving member 53 mounted on a drive shaft 5% to which power is applied by any suitable means {net shown).

The reciprocatory movement of the milk conduit structtre is accomplished by neans of a verticallyslidable bracket 55 (Figs. 7 and 8) comprising a sleeve base 56 and a pair of laterally extending spaced arms 57. The sleeve portion 56 has sliding bearing upon the stationary vertical guide rod 58 rigidly secured at its ends in the standard arms 2'? and 31, the guide rod being parallel to the axis of th tubes 25 and 30. .The bracket arms 57 are provided with openings 59 within which the tube 25 has free rotative hearing. A collar 60 rigidly mounted on the tube 25 between the arms 57 or" the bracket secures the bracket and tube against relative longitudinal movement Wnile permitting tree rota'tive movement of the tube.

Rigidly secured to the ends of the arms 57 is a scottish yoke 61 Within Which is operatively mounted a cross head 62, preferably havii'ig anti-friction rollers 63 in bearing con tact with the yoke. A crank pin 64, secured to the cross head, extends into a bearing provided therefor in the rim of a driving Wheel 65 rigidly mounted on shaft 66 having bearings in the arms 41 and 42. The shaft 66 carries a tight sprocket 67 driven by a chain belt 68 running over adriving sprocket 69 rigidly mounted ona shaft 70 having its bearings in the arms 41 and 42. The shaft 70 also carries a rigidly mounted gearfl in the shaft 47.

It will he e be obvious that the gear trains above described, actuatec Geneva stop mechanisn, are e l mitten; 7 to impart both rot 2 ry movement to tube apply and oischarge c therebyf However, these cycle of. hrs, 1

r clear or" the l o y x e, second, rotating the tue o. in the circle of tank op ing' the milk'tnbes into h- This cycle of movemen constructing the driviir the driven gears 45 and i power transmission the and 70 in the sequence duce the described cycle.

shows arrangement of teeth and :est segments in the respect ve gears effective to accomplish Qlll the the desired cycle in the apparatis l illustrated, the illustrated position of several gears being that from which the ycle E3 .4 '1 .L 1 or the standard S, each an, stencil l.-

' a p: ir or bosses 5 and at the other so pair of Weights 'ZT.

accordance with my improvements,

eurization or milk may be carried out in a OHUZEUOHS manner, anr. Without da nination of the pasteurized milk tnre therewith or any unreated milk, because there op U the Wall of the holding -no inter-connected inlet piping discharge piping to or from the several tan and the supply and discharge pipes 20 a 21 never come in contact with the same n except only after the expiration of the ldu holding period. Assuming th t all of the containers or holding tanks are emp a d is desired to hold the previously hea 1 the upper poi tron bracket carrying a 1:11" or" sheaves over cables l5 respecti j at- I m A tha l n p rhe rote-fintervals of live inn ates, l ly fifteen seconds du 'whicn 1e pipes r be raised 1r om the containers, iio Lted respectively from one container to 1e; LClJHCGHi; container and lowerel into will cause c 7 ontainer to be discharged, tter each time pipe 2* is ainerin Wl. Cl1'i)l18 l e h rty minutes. Burr G time that a container is being discharged the next adjacent conta'ner is being charged With 125 heated milk. other Words, after the containers have all been filled, each time that ti pipes 20 d 21 are lowered into adj ac containers, one of the latter Will be discharged of pasteurized milk through pipe 21 and 139 the previously di charged with lace to l the ho oi? thin may c.. carried on ct container.

110111 COllttllllO.

rang up aratus CO111p1lS- t it ve y elongated containers 5,

dispo ed inward y '1 :torm a central space between said units, a pair of mill: tub-cs operativel supported for rotation over the adjacent ends of said con-- taincrs, means for lowering and raising said tul hate and out of successive pairs oi" said containers for the filling and em 'itying thereof, and means within said central space for actuating said tube lowering and raising means.

2. A milk iasteurizingr, apparatus comprisa pair of unitary groups of containers, said groups being p sitioned in endwardly adjacent; relation said containers being arranged in each group so that the respective adjacent end portions of all of the containers of both gi roups are disposed substantially equidistant from a common center, a pair of mill; tubes rotatable about said common center and supported for vertical movement into and out of succe, ivc pairs of containers for filling and emptyin said containers.

3. A milk pasteurixing; apparatus comprising a plurality of containers iged in two adjacent unitary series disposed in such inter-relation as to form a major central space between said unitary series and a lateral space communicating with said central space, the adjacent end portions of said containers being substantially equidistant iron the center of said major space, a pair of mill; tubes rotat-- able over the adjacent ends of said containers, said tubes being supporten for reciprocatory movement into and out oi said containers, means mainly in said ce tral space for imparting rotary Elllt an o 1 cciprocatory movement to said tubes, and means mainly within said lateral space for actuat'ng said last menti ned means.

4:. A milk pasteurizing apparatus comprising a plurality of covered containers having: individual openings to the interiors thereof arranged equidistantly in a ci'cle, a dome mounted over said openings and rotatable concentrically therewith, said dome having a floor with openings registerablo with said container openings, a pair of milk tubes housed in said dome and operable through said openings when in registe. to charge and discharge milk in said containers successivel and means for operating said dome and tubes inchuling millt inlet and outlet conduits.

5. A. mill: pasteurizing apparatus compris- 19, a. plurality of containers, said containers are openings into their interiors arranged v and cquidistantly, a dome over 1 having openings in the bottcm c'lfilc registerable with the openings in said containers, said dome being rotatable u an axis common with said container openngz; tube, said tubes being; normally in said dome and having bearings ectively in the openings in the bottom of said dome for movement therethrough and through the openings in said containers for charging; and discharging said con"ainers, a rocioroca ory support for said tubes, said ing a milk supply passage and a passage, means for rotating s in said dome with the openings in said co tainers, and means operable to raise and lower said support and cause said tubes to enter into and withdraw from said containers.

6. A milk pasteurizing apparatus as set forth in claim 5, provided with. driving, means for actuating said dome rotating means and said support reciprocating means, said driving means being operable to cause into mittently the sequential movements of raising support to lift said tubes out of said containers, rotating said dome to carry said tubes to the next successive container openings respectively, and lowering said support to enter said tubes into said containers.

7. In mill: pasteurizing apparatus, the combination of a rotatable dome having a pair of openings in the bottom thereof, a pair of mill; tubes in said dome positioned for reciprocatory movement through said openings, a reciprocatory support for said tubes, means for rotating said dome, means for reciprocating said support, and intermittent gear connections between said dome rotating means and said support reciprocating means whereby said means respectively are caused to operate intermittently to etlect in sequence the lifting of said support, the rotating of said dome, and the lowering of said support.

In witness whereof I have hereunto attached my signature.

CHARLES E. NORTH.

a mill: charging tube, amilk dis-. 

